@startuml

skinparam backgroundColor white

entity Initiator
entity Responder

== Initial multistream handshake ==

Responder -> Initiator: /multistream/1.0.0
Initiator -> Responder: /multistream/1.0.0

== Negotiate security protocol ==

Initiator -> Responder: /tls/1.0.0
note left: Initiator proposes TLS for security

Responder -> Initiator: na
note right: Responder does not support TLS yet

Initiator -> Responder: /noise
note left: Initiator falls back to Noise

Responder -> Initiator: /noise
note right: Responder supports Noise, echoes back protocol id

... Noise handshake ...

== Negotiate stream multiplexer ==

Initiator -> Responder: /mplex/1.0.0
note left: Initiator proposes mplex for stream multiplexing

Responder -> Initiator: /mplex/1.0.0
note right: Responder supports mplex, echoes back protocol id


@enduml